DIY Mini Smart Switch model iHSW02 Zigbee 3.0 not recognized

A zigbee switch like that should be paired as generic zigbee device.
But are you sure it is the zigbee version you’ve ordered?
While you also can select a wifi model while ordering. . →
then install Tuya Smart app on your phone
pair the switch using that app
install Tuya Cloud app on Homey
add a new device, and select switch from the Tuya Cloud app